Enum Domain 

pub enum Domain {
    Light,
    Control,
    Clock,
}

Physical coupling domain of a transducer port.

Derived from the ModulationSinkKind of a modulation-sink pin. A transducer port couples two otherwise galvanically-isolated networks through a NON-electrical medium (light, magnetic flux, …) — that medium is the Domain. A later formation phase routes such couplings with a one-sample delay across the domain boundary (see Directive::RouteDelayed / BoundaryPolicy::DelayedCoupling).

(The design note reports/cross-network-coupling-design-2026-06-13.md sketches a CouplingDomain { Flux | Light | Thermal | … }; this is the derived, model-grounded realisation of that idea — every variant maps to a concrete ModulationSinkKind the device models already emit.)

Variants

Light

Optical coupling — photocoupler LED → CdS/LDR cell (.led).

Control

Control-voltage / current coupling — JFET Vgs, MOSFET Vgs, OTA Iabc, VCA CV, tube Vgk/Vg1k bias injection. The “control electrode driven by an external modulation source” family.

Clock

Clock / sample-rate coupling — BBD clock, delay speed/time.

Implementations

impl Domain

pub fn from_sink_kind(kind: ModulationSinkKind) -> Self

Derive the coupling domain from a modulation-sink kind.

pub fn label(self) -> &'static str

Human-readable label for diagnostics.

Trait Implementations

impl Clone for Domain

fn clone(&self) -> Domain

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Domain

impl Debug for Domain

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Domain

impl Hash for Domain

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Domain

fn eq(&self, other: &Domain) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Domain